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How Homophily Affects Learning and Diffusion in Networks

Golub, Benjamin; Jackson, Matthew O. - Fondazione ENI Enrico Mattei (FEEM) - 2009

on repeated averaging of neighbors' information and Markovian diffusion processes such as the Google random surfer model …

Persistent link: https://www.econbiz.de/10005008021

Naïve Learning in Social Networks: Convergence, Influence and Wisdom of Crowds

Jackson, Matthew O.; Golub, Benjamin - Fondazione ENI Enrico Mattei (FEEM) - 2007

We study learning and influence in a setting where agents communicate according to an arbitrary social network and naïvely update their beliefs by repeatedly taking weighted averages of their neighbors’ opinions. A focus is on conditions under which beliefs of all agents in large societies...

Persistent link: https://www.econbiz.de/10005423267

Marketing via Friends: Strategic Diffusion of Information in Social Networks with Homophily

Chuhay, Roman - Fondazione ENI Enrico Mattei (FEEM) - 2010

The paper studies the impact of homophily on the optimal strategies of a monopolist, whose marketing campaign of new product relies on a word of mouth communication. Homophily is a tendency of people to interact more with those who are similar to them. In the model there are two types of...

Persistent link: https://www.econbiz.de/10008674339

Building Up Social Capital in a Changing World: A Network Approach

Vega-Redondo, Fernando - Fondazione ENI Enrico Mattei (FEEM) - 2003

This paper models the dynamic process through which a large society may succeed in building up its “social capital” by establishing a stable and dense pattern of interaction among its members. In the model, agents interact according to a collection of infinitely repeated Prisoner’s...

Persistent link: https://www.econbiz.de/10005423105

Opportunity and Choice in Social Networks

Pin, Paolo; Franz, Silvio; Marsili, Matteo - Fondazione ENI Enrico Mattei (FEEM) - 2008

Our societies are heterogeneous in many dimensions such as census, education, religion, ethnic and cultural composition. The links between individuals - e.g. by friendship, marriage or collaboration - are not evenly distributed, but rather tend to be concentrated within the same group. This...

Persistent link: https://www.econbiz.de/10005423163

Individual Search and Social Networks

Goyal, Sanjeev; Rosenkranz, Stephanie; Weitzel, Utz; … - Fondazione ENI Enrico Mattei (FEEM) - 2014

The explosion in online social networks motivates an enquiry into their structure and their welfare effects. A central feature of these networks is information sharing: online social networks lower the cost of getting information from others. These lower costs affect the attractiveness of...

Persistent link: https://www.econbiz.de/10010781878

Formation of Bargaining Networks Via Link Sharing

Priazhkina, Sofia; Page, Frank - Fondazione ENI Enrico Mattei (FEEM) - 2014

This paper presents a model of collusive bargaining networks. Given a status quo network, game is played in two stages: in the first stage, pairs of sellers form the network by signing two-sided contracts that allow sellers to use connections of other sellers; in the second stage, sellers and...

Persistent link: https://www.econbiz.de/10010781881

Opinion Dynamics and Wisdom under Conformity

Buechel, Berno; Hellmann, Tim; Kölßner, Stefan - Fondazione ENI Enrico Mattei (FEEM) - 2014

We study a dynamic model of opinion formation in social networks. In our model, boundedly rational agents update opinions by averaging over their neighbors' expressed opinions, but may misrepresent their own opinion by conforming or counter-conforming with their neighbors. We show that an...

Persistent link: https://www.econbiz.de/10010781882

Trust and Manipulation in Social Networks

Förster, Manuel; Mauleon, Ana; Vannetelbosch, Vincent J. - Fondazione ENI Enrico Mattei (FEEM) - 2014

We investigate the role of manipulation in a model of opinion formation. Agents repeatedly communicate with their neighbors in the social network, can exert effort to manipulate the trust of others, and update their opinions about some common issue by taking weighted averages of neighbors'...

Persistent link: https://www.econbiz.de/10010781888

Diffusion of Innovations on Community Based Small Worlds: the Role of Correlation between Social Spheres

Tanimura, Emily - Fondazione ENI Enrico Mattei (FEEM) - 2010

Which types of networks favor the diffusion of innovations in the sense that an innovation whose intrinsic benefits are … game model of the diffusion of innovations. Here we study this question for a class of irregular random networks, Small …, in particular Watts' Small world. We show that there are different types of Small World graphs some which favor diffusion …

Persistent link: https://www.econbiz.de/10008674335